Finding the Fourth Proportional to 8,405.01, 12,604.61 and 3,728.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,405.01 : 12,604.61 = 3,728.31 : x
2. Step 2: Convert to fraction form
   8,405.01/12,604.61 = 3,728.31/x
3. Step 3: Cross multiply
   8,405.01x = 12,604.61 × 3,728.31
4. Step 4: Simplify right side
   8,405.01x = 46,993,855.56
5. Step 5: Solve for x
   x = 46,993,855.56/8,405.01
6. Step 6: Final answer
   x = 5,591.17